<template>
  <div class="login-container">
    <el-form ref="loginForm" :model="loginForm" :rules="loginRules" class="login-form" autocomplete="on" label-position="left">

      <div class="title-container">
        <h3 class="title">
          {{ $t('login.title') }}
        </h3>
        <lang-select class="set-language" />
      </div>

      <el-form-item prop="username">
        <span class="svg-container">
          <svg-icon icon-class="user" />
        </span>
        <el-input
          ref="username"
          v-model="loginForm.username"
          :placeholder="$t('login.username')"
          name="username"
          type="text"
          tabindex="1"
          autocomplete="on"
        />
      </el-form-item>

      <el-tooltip v-model="capsTooltip" content="Caps lock is On" placement="right" manual>
        <el-form-item prop="password">
          <span class="svg-container">
            <svg-icon icon-class="password" />
          </span>
          <el-input
            :key="passwordType"
            ref="password"
            v-model="loginForm.password"
            :type="passwordType"
            :placeholder="$t('login.password')"
            name="password"
            tabindex="2"
            autocomplete="on"
            @keyup.native="checkCapslock"
            @blur="capsTooltip = false"
            @keyup.enter.native="handleLogin"
          />
          <span class="show-pwd" @click="showPwd">
            <svg-icon :icon-class="passwordType === 'password' ? 'eye' : 'eye-open'" />
          </span>
        </el-form-item>
      </el-tooltip>
      <el-button :loading="loading" type="primary" :disabled="isSuccess" style="width:100%;margin-bottom:30px;" @click.native.prevent="showPopup">
        {{ $t('login.logIn') }}
      </el-button>

      <div style="position:relative">
        <div class="tips">
          <span>{{ $t('login.username') }} : admin</span>
          <span>{{ $t('login.password') }} : {{ $t('login.any') }}</span>
        </div>
        <div class="tips">
          <span style="margin-right:18px;">
            {{ $t('login.username') }} : editor
          </span>
          <span>{{ $t('login.password') }} : {{ $t('login.any') }}</span>
        </div>

        <div class="tips">
          <span style="margin-right:18px;">
            {{ msg }}
          </span>
        </div>

        <el-button class="thirdparty-button" type="primary" @click="showDialog=true">
          {{ $t('login.thirdparty') }}
        </el-button>
      </div>
    </el-form>

    <el-dialog :title="$t('login.thirdparty')" :visible.sync="showDialog">
      {{ $t('login.thirdpartyTips') }}
      <br>
      <br>
      <social-sign />
    </el-dialog>
    <LoginSlideVerify :visible="popupVisible" @close="closePopup" />

  </div>
</template>

<script>
import { validUsername } from '@/utils/validate'
import LangSelect from '@/components/LangSelect'
import SocialSign from './components/SocialSignin'
import LoginSlideVerify from './components/LoginSlideVerify'
import FingerprintJS from '@fingerprintjs/fingerprintjs' // 浏览器ID插件

// https://blog.csdn.net/weixin_43407997/article/details/124665709
export default {
  name: 'Login',
  components: { LangSelect, SocialSign, LoginSlideVerify },
  data() {
    const validateUsername = (rule, value, callback) => {
      if (!validUsername(value)) {
        callback(new Error('Please enter the correct user name'))
      } else {
        callback()
      }
    }
    const validatePassword = (rule, value, callback) => {
      if (value.length < 6) {
        callback(new Error('The password can not be less than 6 digits'))
      } else {
        callback()
      }
    }
    return {
      loginForm: {
        username: 'admin',
        password: '111111',
        visitorId: ''
      },
      loginRules: {
        username: [{ required: true, trigger: 'blur', validator: validateUsername }],
        password: [{ required: true, trigger: 'blur', validator: validatePassword }]
      },
      passwordType: 'password',
      capsTooltip: false,
      loading: false,
      popupVisible: false,
      showDialog: false,
      redirect: undefined,
      otherQuery: {},
      slideVerify: false,
      isSuccess: false,
      msg: ''
    }
  },
  watch: {
    $route: {
      // https://blog.csdn.net/qq_59917539/article/details/128082707
      // vue 登录页面使用立即监听$route的方式，得到登录后跳转会的路径
      handler: function(to, from) {
        // to.path == '/home'
        console.log('index watch======', to, from)
        const query = to.query
        if (query) {
          console.log('跳转回参数页面', query.redirect)
          this.redirect = query.redirect
          this.otherQuery = this.getOtherQuery(query)
        }
      },
      immediate: true
    }
  },

  // created ：在 Vue 实例被创建的时候，即 new Vue() 之后，会立即执行该函数，可以在这里初始化数据，但是不能进行 dom 操作；
  // mounted ：该函数在组件挂载到页面上时触发，只执行一次，在这里进行 dom 操作更好。
  created() {
    // window.addEventListener('storage', this.afterQRScan)
  },
  mounted() {
    if (this.loginForm.username === '') {
      this.$refs.username.focus()
    } else if (this.loginForm.password === '') {
      this.$refs.password.focus()
    }
    this.getVisitorId()
  },
  destroyed() {
    // window.removeEventListener('storage', this.afterQRScan)
  },
  methods: {
    getVisitorId() {
      FingerprintJS.load().then(fp => {
        fp.get().then(result => {
          // const visitorId = result.visitorId
          this.loginForm.visitorId = result.visitorId
          console.log('FingerprintJS 初始化ID:', result.visitorId)
          this.$store.dispatch('app/setVisitorId', result.visitorId)
        })
      })
    },
    checkCapslock(e) {
      const { key } = e
      this.capsTooltip = key && key.length === 1 && (key >= 'A' && key <= 'Z')
    },
    showPwd() {
      if (this.passwordType === 'password') {
        this.passwordType = ''
      } else {
        this.passwordType = 'password'
      }
      this.$nextTick(() => {
        this.$refs.password.focus()
      })
    },
    showPopup() {
      this.popupVisible = true
    },
    closePopup(data) {
      // 子组件传递过来的参数
      if (data) {
        this.popupVisible = false
        this.slideVerify = data
        this.handleLogin()
      } else {
        this.slideVerify = false
      }
    },
    // this.$router.push({ path: '/DetailManagement', query: { auditID: "row.id", type: '2' } });
    // 在目标页面通过this.$route.query获取参数：
    // this.$route.query.auditID
    // this.$route.query.type
    handleLogin() {
      // validate方法进行表单预验证,valid参数表示表单是否通过验证，通过为true,不通过为false
      if (this.slideVerify) {
        this.$refs.loginForm.validate(valid => {
          if (valid) {
            this.loading = true
            this.$store.dispatch('user/login', this.loginForm)
              .then(data => {
                console.log(data)
                // https://blog.csdn.net/u014635374/article/details/116162950
                this.loading = false
                this.slideVerify = false
                // 跳转到其他页面，进行路由
                this.$router.push({ path: this.redirect || '/', query: this.otherQuery })
              })
              .catch(error => {
                console.log('error catch!!', error)
                this.loading = false
              })
          } else {
            console.log('error submit!!')
            return false
          }
        })
      } else {
        this.msg = '请滑动验证'
      }
    },
    getOtherQuery(query) {
      console.log('getOtherQuery===', query)
      // https://www.jianshu.com/p/de7c5f87170d
      return Object.keys(query).reduce((acc, cur) => {
        if (cur !== 'redirect') {
          acc[cur] = query[cur]
        }
        console.log(cur, '===cur=====', acc[cur])
        return acc
      }, {})
    }

  }
}
</script>

<style lang="scss">
/* 修复input 背景不协调 和光标变色 */
/* Detail see https://github.com/PanJiaChen/vue-element-admin/pull/927 */

$bg:#283443;
$light_gray:#fff;
$cursor: #fff;

@supports (-webkit-mask: none) and (not (cater-color: $cursor)) {
  .login-container .el-input input {
    color: $cursor;
  }
}

/* reset element-ui css */
.login-container {
  .el-input {
    display: inline-block;
    height: 47px;
    width: 85%;

    input {
      background: transparent;
      border: 0px;
      -webkit-appearance: none;
      border-radius: 0px;
      padding: 12px 5px 12px 15px;
      color: $light_gray;
      height: 47px;
      caret-color: $cursor;

      &:-webkit-autofill {
        box-shadow: 0 0 0px 1000px $bg inset !important;
        -webkit-text-fill-color: $cursor !important;
      }
    }
  }

  .el-form-item {
    border: 1px solid rgba(255, 255, 255, 0.1);
    background: rgba(0, 0, 0, 0.1);
    border-radius: 5px;
    color: #454545;
  }
}
</style>

<style lang="scss" scoped>
$bg:#2d3a4b;
$dark_gray:#889aa4;
$light_gray:#eee;

.login-container {
  min-height: 100%;
  width: 100%;
  background-color: $bg;
  overflow: hidden;

  .login-form {
    position: relative;
    width: 520px;
    max-width: 100%;
    padding: 160px 35px 0;
    margin: 0 auto;
    overflow: hidden;
  }

  .tips {
    font-size: 14px;
    color: #fff;
    margin-bottom: 10px;

    span {
      &:first-of-type {
        margin-right: 16px;
      }
    }
  }

  .svg-container {
    padding: 6px 5px 6px 15px;
    color: $dark_gray;
    vertical-align: middle;
    width: 30px;
    display: inline-block;
  }

  .title-container {
    position: relative;

    .title {
      font-size: 26px;
      color: $light_gray;
      margin: 0px auto 40px auto;
      text-align: center;
      font-weight: bold;
    }

    .set-language {
      color: #fff;
      position: absolute;
      top: 3px;
      font-size: 18px;
      right: 0px;
      cursor: pointer;
    }
  }

  .show-pwd {
    position: absolute;
    right: 10px;
    top: 7px;
    font-size: 16px;
    color: $dark_gray;
    cursor: pointer;
    user-select: none;
  }

  .thirdparty-button {
    position: absolute;
    right: 0;
    bottom: 6px;
  }

  @media only screen and (max-width: 470px) {
    .thirdparty-button {
      display: none;
    }
  }
}
</style>
